Lubricating apparatus



Oct. 11, 1938.

E. W. DAVIS LUBRICATING APPARATUS Filed oct. 9, 1929l Y 2 Sheets-Sheet4 1 mmf Mrz;

Oct. 1l, 1938. E. w. DAVIS -LUBRICATING APPARATUS Filed Oct. 9, 1929 2 Sheets-Sheet 2 azz/MMM Patented Oct. 11, 1938 UNITED jSTATEs YPAT-ENT oFFiCE Ernest W. Davis, Oak Park, Ill., assignor '-to le- `mite Corporation, Chicago, Ill., a corporation of Y Delaware v Y "Application October 9, 22 claims,

- My invention relates generally `to centralized lubricating systems and apparatus therefor and more particularly to an automatic'pumpior'isuch Y systems.

It is an object of my invention to Vprovide anew and improved fluid-operatedk pump for lubricat-. Y

ing systems. n

It' .is an Vobject of my invention to provide in an automobile an improved centralized lubricatingzsystem wherein the air suctionin the intake manifold of the automobilefengine isrutilizred as fa source of power for'operating'the system.

, 1 It is a further Vobjectof -my inventionto pro,-

vide a new and improved type of combined spring and suction operated pump. Y V i Y YIt is a further object` of my inventionto `provide a manual control for starting the'opera'tion` of the pump and an automatic stopping device. It is a further object of my invention to provide 4a pump that will operate only vwhen the engine of 'the automobile is running. n Y l A further `object is to provide in a lubricating y system of the above-mentioned type'apump which cannot be shut oil. untilthe lubricating operation is completed. g

A further object of my invention is to provide a pump installation for a lubricating system that is simple in construction, durable, and which may beccheaply manufactured and easilyinstalled. c Y `Other objects and advantages will appear more iullyfrom the following description, reference,

Fig. 1 isa somewhat 'diagrammatic view of my improved -pumpinstallatiom the oilV reservoir and associated parts being section; I

Fig. 2 isa view taken i anclshows the control Vknob mounted on the dash Yof an automobile; and Y' f Fig.v 3 isa vertical `sectional shown` in: crosse wardly vpro 1`ecti11,,'-flange l2fto whichair cover I4 v is normally secured and an internally 'threaded annular downwardly projecting Yflange |,6'to re-V ceive a glass reservoir I8, agasketdZll beinginteiposed to vprovidea seal and also to `allovirla on the linev 2-2 of lf'ligplVv Y view through` they.; section motor control-mechanism'taken on V'theV 1929, `Serial No. 398,322

(Cl. 18429)` 'i y tightening ofthe reservoir in the body without chipping the upper edge of the reservoir. A plunger type lubricant pump 22 is mounted .adjacent the bottom of the reservoir upon a `tubular support 24 screw threaded into an aperture 26 in the lower portion of the body I0. .The pump generally includes a screen 28, a cylinder block 30 having inlet'ports 32 and a cylindrical bore 34, a plunger 36, an outlet check valve 38,-and-a conduit 40 leadingv up, into a suitable .coupling bushing 42 mounted in the lower part 44 of'body l0. y, A passageway 46 formed in the body lllextends from Ibushing 42 outwardly through aY boss ,48j to which, 'in the illustrated embodiment of my invention, a suitable conduit Y5l) is kconnected leading to thevarious `bearings `(not shown) `tobe lubricated. l

Thek mechanism 'for operating the abovementioned pumpV will now be described. 5 The upper portion of body I is formed with a cylindrical vbore 52 and an inverted'cup 54 is pressed into ,placetheein to forman air-tight chamber 56; An operatingpiston 51 is mounted in this chamber andcomprises generally a cup leather B afaceplate 60-and a backing plate 62. The back plate 62 has an upturned flange 66 adapted to seat acompression spring 68 placed between it and the roof of chamber`56.` Piston 51 is secured to a reduced portion ofv a connecting rod 12 in any suitable manner,` as, for example, by lupsetting `the end, as shownV on the drawings at 12. Operating rod 12 extends down through the tubular pump support'24 and is universally connected rat its lower end tothe upperv end of pump plunger 36 Vand thus serves to connect the piston v1with lthe` pumpplunger. A 'valve 14 overlies a port'16 ini the roof ofchamber 56'directly above .the head12iof operating rod 12, and valve 14 is Vnormally heldspaced slightly away from port 16 by spring-15. To insure an airtight seal vvalve '14 yis provided with a felt washer 18,v which ts over a valve guide stem 19 extending downwardly into chamber `56. V

V, Chamber.56-`containsan`inlet port 8|) communicating through suitable passageway's 80a, 80h and 88o, in thebodyll) with a suitable coupling V i:ushing .82 threaded in a boss 84. A conyduitilfleads fromthisfbushing to av remote control mechanism Vmounted for convenience upon Vthe dashboard of an automobile.

=The control mechanism -isjprovided with a `housing 98 which,A is fastened tothe dashboard y bybolts 92. i The bolts pass through a ilange 98' of vthe housing body, the dashboard and an indicating-dial `or panel Sill' mounted insidev the vin the rear wall |211 of the housing 90.

driving compartment of the automobile (as shown most clearly in Fig. 2).

Conduit 86 is connected to housing 90 by a coupling bushing 96 and communicates with the chamber in the housing 90 by means of the passageway 93. A flexible disc diaphragm |0| is mounted at its edge upon a flanged cup-shaped portion |533 of housing 90, being in direct communication with the chamber |00 through the openings |02. A pawl |04 is pivotally mounted on a bracket |06 attached to the center of the diaphragm, and engages a ratchet wheel |08 which has a tooth removed as indicated at H0. Ratchet wheel |98 is secured to rod ||2 which is journaled in the reduced portion||4 of the housing 90 and extends through the dashboard 88 and indi-:ating panel 94, and at its end carries a Y |22 and the ratchet wheei |03 and normaliy tends to press the ratchet wheel against the opposite wall |24 of the housing 90. The ratchet wheel |08 is provided with four flat arms extending radially from its hub, one of which has a widened portion |26 that overlies a port or opening |28 Qpening |28 communicates with a suitable coupling bushing |30 screw threaded into a boss |32 on the housing 90. vA conduit leads from this bushing to any convenient part of the intake manifold |38 of the engine, being connected thereto by the coupling bushing |36.

'Y When it is desiredto have the device operate,V assuming that the engine of the automobile is runningthe operator will turn the control knob H8 clockwise until the indicator has moved from Finish`to Start Through the medium of operating rod i|2 the ratchet wheel |08 will be rotated clockwise (Fig. 3) untilv port |28 is uncovered, vand the rst tooth onratchet wheel |08 will bey engaged'by pawl |04.Y When .this port is uncovered the intake manifold Will be in communication with chamber B, valve '|l|Y will close port'l vand the pressure in chamber 56 will be reduced. The partial vacuum thus created in the chamber 56 will cause piston 51 to rise, re-

ducing the size of the chamber and compressing spring 68 until the endy 12 of the piston rod strikes the end of valvestem 19, opening port 16. The spring l5 will open the valve 'I4 quickly, allowing the chamber 56 to fillrapidly with air and permit the spring 08' to expand moving piston 5l downwardly and through rod 12J operate the plunger ofi the pump in the reservoir. When V,diaphragm |0| andv ratchet pawl |04 attached thereto. kPrawl |04 rotates ratchet wheel |08 step by stepv through a complete revolutie-n until the mutilatedportion ||0 is returned toritsoriginal position.y At thisopoint the indicator .H6 will `point to theword fFinish on 4dial 94 andenlarged'portion |26 or" the ratchet wheel arm will have covered inlet port |28, thus shutting 01T suction from the manifold and stopping the operation of the lubricating pump. yFrom the above it will readily be seen' that the device may be operated either when the vehicle is being driven or when the vehicle is parked. As the greatest suction in an intake manifold is obtainable when the engine of the automobile is idling it may sometimes be advantageous te operate the pump when the automobile is not being driven. It will further be apparent that the number of strokes of the pump may be regulated by enlarging or decreasing the size of the ratchet wheel in the control.

My invention is capable of wide variation within equivalent limits and I contemplate such variation as may desirable or useful in the particular adaptation of the invention shown, or in its Vadaptation to other apparatus. I do not restrict myself in Vany unessential particulars, but what I claim and desire to secure Letters Patent is:

.1. A Vpump and reservoir unit for centralized `lubricating systems including a reservoir, a pump and conduit lines in Connection therewith, a vacuum operated motor for operating said pump, manually operable starting means and means for automatically stopping said motor after a predetermined' plurality of operations thereof.

2. pump and reservoir unit for centralized lubricating systems including a reservoir, a pump rand conduit lines, in connection therewith, a vacuum operated motor for operating said pump, manually operable starting means and diaphragm operated means for stopping said motor.

3. A pump and reservoir unit for centralized lubricating Vsystems including a reservoir, a pump and conduit lines in connection therewith, a vacuum operated motor for operating said pump, manually operable starting means and pawl and ratchetoperated means for stopping said motor.

4. A pump and reservoir unit for centralized lubricating systems including a cylindrical lubricant, acapmember for said reservoir, a plunger pump secured to said cap member and located adjacent the bottom of said reservoir, and vacuum operated means mounted in the upper part of Ysaid cap for 'actuating said pump.

55A pump and reservoir unit for centralized lubricating systems, including a bodya reservoir depending therefrom, a plunger pump secured within vsaid reservoir, and vacuum operated means mounted within the upper part of said body for actuating said pump, said means in- I vice serving as valve means normally to'close said inlet, said control device including a ratchet mechanism normally held against movement and adapted to be manually shifted to uncovery said iniet for establishing a communication Vbetween the pump and said inlet. Y '1 "i. In an automobile lubricating system, the

combination of a suction operated lubricating pump, a chamber communicating through a passage with said pump, a suction conduit havingan inlet communicating with said chamber, and a adapted to bemanually shifted to uncover said predetermined period.

aragn niet fer establishing"cqmmninmgjbattaglia@ pump and said suction ,c onduit,

l, y8. In a'lubricating system, hefcoriibinatinoff a suction operated lubricatingpumpfa chamber Vcommunicating throughVK a passageywith -said pump, a suction Vconduit havingfan'inlet communicating with said chamber, land-aninletvalve nism, and a ratchetwheel'normally held against movement and adapted to be advancedfbysaid .Linktip rtfaft? pawl mechanism to cover saidy 9. In a lubricating*system,ferfjautomotivejvehicles having a Asuction operatedv lubricating` pump, a control device for said f'pump 'including a ratchet mechanism forjccntrollingrthe inlet fa suction supply line, and means foractuating -the ratchet mechanism Ato uncover said inlet to place the supply line in'communication with said pump. Y

l0. In a lubricating system for automotive vehicles having a suction operated lubricating pump, a control device for said pump includinga ratchet mechanism for controllingthe inlet of a suction supply line and means including a dia.-

phragm operated pawl for advancing said ratchet mechanism step by step through a cycle of operations to close said inlet after a predetermined period.

11. In control mechanism for asuctionoperated lubricating pump, a chamber, a flexible dia-` phragm mounted therein, a suction inlet in said chamber, a pawl operably connected to Vsaid diaphragm, a ratchet'wheel cooperating with said pawl, a portion of said ratchet wheel being adapted to overlie said suction inlet, an outlet lconduit communicating With said chamber and with said suction motor, and manually operable means for rotating said ratchet wheel touncover said linlet port, whereby suction is permitted to communicate with said motor for operating sameand setting up a pulsation in Ysaidy chamber causing said diaphragm to vibrate and operate saidfpawl and Y ratchet mechanism to cover the rsuction "inlet,

thereby stopping said motor.

12. A pump and reservoir unit for lubricating systems, including a body,` a reservoir depending therefrom, aplunger pump secured to said body and located adjacentthe bottom of said reservoir, suction operated means mounted within said body for actuating said pump, said meansV including a cylinder, a piston therein, a valve associated with said cylinder, and a return spring for restoring said piston to normal position, and a control mechanism for saidsuction pump includ-V ing a chamber, a suction inlet therein, a flexible diaphragm, a pawl operably connected to said dia-Y phragm, a ratchet wheel'cooperating with VVsaid pawl, a portion of said ratchet wheel adapted to A overlie said suction inlet, an outlet conduit ccmmunicating with said suction chamber and with said suction motor, and manually operable'means r for rotating said ratchet wheel to uncover the in-.l

let port to allow said motor to operate. Y

13. A unitary pump andreservoir installation for a lubricating systemY including a body, a

reservoir attached thereto,fa plunger pump secured to said body in communication with said reservoir, suction operated means mounted within saidbody for actuating said pump, Ysaid means including'a cylindrical borein the top of said body, an inverted cap pressed into said bore forming a cylinder, a return spring and piston mount- ,i

ed therein, said piston connected to the plunger pump, a valve port in Vthe upper wall'oi said cyl,-V

centralized Linder, a v'valveY overlying saidv port having a stem rextt-inding'Sinto said cylinder, a compression spring surrounding said stem and engaging said piston,

an'airexhaustport connected to asource of vacuum, and remote control means for starting and stopping the'operation oi said lpux'np).

14. A pump and reservoir system' for lcentralized lubricating systems, including an oil reservoir, a

. plungerl 'pump' secured therein, vacuum impelled means for operating Ysaid pump, rsaid means including a body containing a cylinder, said cylin- 'zd'er provided with a vacuumport andan air'inlet lportj'avalve member adapted to'close said air inlety port and havinga stem extending into said cylinder, a pistonreciprocably mounted in said cylinder and a returnspring for said piston said piston being 'adapted-'to engage said valve stem at 'the top,v of its stroke to unseatsaid'valve member.

l5. A;pumpandreservo'ir system lfor centralized 'lubricating systems, including an oil reservoir, ja plunger pump secured therein, vacuum impelled Y means for operatingfsaid pump, said means comprising a Vbody containing a cylinder provided with a vacuum port and an air inlet port, a valve member adapted to close said air inlet port having astem extending into said cylinder, a, piston and return spring in said cylinder, said piston to said stem, a pump body positioned near the lower end of said reservoir, said plunger extending therein, an oil inlet in said pump body,

andan oil filtering means between' said inlet and the oil insaid reservoir. Y

17. In lubricating apparatus, a combined vacuum operated pump and reservoir installation including a glass oil receptacle,V a cap therefor, a pressure chamber in the upper part of said cap, means to connect said chamber to a sub-atmospheric pressure source, a movable Wall in said chamber, a'plunger stem extending downwardly from said movable wall, a plunger universally connected thereto, a cylinder supported from said cap in which said plunger reciprocates, an oil filter secured to said cylinder, and an oil conduit extending from said cylinder` through said cap for thepassageof lubricant under pressure.

18. linr lubricating apparatus, a combined vacuum operated pump and reservoir installation including a glass oil receptacle, aV cap for the top thereof, a pressure chamber in the upper part of said cap,l a movable4 Wall therein, a spring for normally urging said movable wall in one direction, a plunger stem extending downwardly from said movable wall, a plunger universally vconnected 1thereto, a cylinder supported from said -cap in which said plungerreciprocates, an oil Y lubricating systems including a body, a lubricant reservoirfdepending therefrom, a plunger pump secured to said body within said reservoir, vacadapted to engage said valve stem at the top of l uum operatedmeans mounted in the upper part 75 of said body for actuating said -pump-fa rotatable control -Valve associated with said motor manually openable to initiate the operation oi said motor and automatic means for rotating said valve to Yclose the same. c

20. A pump and reservoir unit for centralized lubricating systems including a body, a reservoir detachably secured thereto, apump secured to wsaid body Within said reservoir, anfoil lter associated with said pump, a vacuum operated motor mounted in the upper part of said body for actuating said pump, a control valve for said vacuum motor, and means for manipulating said Valve vto initiate the operation of said motor for a'plurality of operating cycles.v l

v21. A pump and reservoir unit `for centralized lubricating systems including a reservoinapump and conduit lines in connection therewith, a vacuum operatedy motor for actuatingsaid pump, a rotatable Valve for Acontrolling the operation of aioaos said motor manually openable to initiate the operation of said motor, and -means cooperating lWith'said valve for rotating the same a predetermined `degree and toclose the valve after a pluralityof operating cycles of the motor have ERNEST W. DAVIS. 

